<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>

<body>
    <div id="app">
        <!-- 单选框无论多少个都是单选，data中只用一个字符串保存数据即可 -->
        <input type="radio" name="sex" value="男" v-model="sex">男
        <input type="radio" name="sex" value="女" v-model="sex">女
        <input type="radio" name="sex" value="未知" v-model="sex">未知
    </div>

    <script>
        Vue.config.prodactionTip = false

        const vm = new Vue({
            el: "#app",
            data() {
                return {
                    sex: ""
                }
            }
        })
    </script>
</body>

</html>